The NZXT Source 220 is positioned for the budget gamer that expects good features. The Source 220 delivers in spades. For cooling, NZXT has included one 120mm rear exhaust fan and one 140mm top exhaust fan. Both the 5.25" ODD drive bays and the 3.5" HDD drive bays are completely tool free. The Source 220 features a steel mesh for optimal air flow. The front inputs include a single USB 3.0, USB 2.0 port, and 3.5mm audio in/out jacks. The Source 220 leaves room to expand the cooling with 2 front 120mm, 1 top 120mm, and 1 bottom 120mm fan ports. On the interior there are 7 expansion slots and room for a GPU up to 330mm.